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Table 1 Socio-demographic characteristics of participants by allocated front-of-pack nutrition label (n = 2194)

From: Impact of front-of-pack nutrition labels on consumer purchasing intentions: a randomized experiment in low- and middle-income Mexican adults

 GDA
(n = 725)
MTL
(n = 734)
WL
(n = 735)
Chi-square
P value
Gender, n(%)
 Female422 (58.2)434 (59.1)406 (55.2)0.29
 Male303 (41.8)300 (40.9)329 (44.8)
Age, n(%)
 21–29 y348 (48.0)350 (47.7)363 (49.4)0.85
 30–49 y194 (26.8)193 (26.3)179 (24.4)
 50 and over183 (25.2)191 (26.0)193 (26.3)
Marital status, n(%)
 Divorced/Single/Widow371 (51.17)362 (49.32)382 (51.97)0.58
 Married/partner354 (48.83)372 (50.68)353 (48.03)
Household monthly income (MXN pesos), mean (SD)
  < $2699134 (18.5)128 (17.4)137 (18.6)0.99
 $2700-6799225 (31.0)236 (32.2)233 (31.7)
 $6800-11,599190 (26.2)193 (26.3)188 (25.6)
 $11,600-34,99126 (17.4)125 (17.0)133 (18.1)
  > $35,00050 (6.9)52 (7.1)44 (6.0)
Education level, n (%)
 Secondary school and lower139 (19.2)135 (18.4)132 (18.0)0.98
 High-school227 (31.3)243 (33.1)247 (33.6)
 Undergraduate316 (43.6)315 (42.9)315 (42.9)
 Graduate43 (5.9)41 (5.6)41 (5.6)
Occupation, n (%)
 Student184 (25.4)185 (25.2)176 (24.0)0.60
 Home maker110 (15.2)108 (14.7)105 (14.3)
 Employee321 (44.3)326 (44.4)321 (43.7)
 Salesman/woman63 (8.7)59 (8.0)60 (8.2)
 Other47 (6.5)56 (7.6)73 (9.9)
Body Mass Index categories, n (%)a
 Underweight15 (2.1)15 (2.0)23 (3.1)0.86
 Normal weight330 (45.5)333 (45.4)330 (44.9)
 Overweight287 (39.6)292 (39.8)293 (39.9)
 Obesity93 (12.8)94 (12.8)89 (12.1)
Previous diagnosis of chronic disease, n (%)
 Diabetes57 (7.9)62 (8.5)63 (8.6)0.87
 Hypertension90 (12.4)87 (11.9)90 (12.2)0.95
 High cholesterol81 (11.2)81 (11.0)82 (11.2)1.00
 High triglycerides70 (9.7)77 (10.5)85 (11.6)0.49
Interest in health, n (%)b
 Not interested or a little interested148 (20.4)149 (20.3)176 (24.0)0.41
 Very interested577 (79.6)585 (79.7)559 (76.1)
Nutrition knowledge, n (%)c
 Not knowledgeable149 (20.5)153 (20.8)151 (20.5)1.00
 A little knowledgeable299 (41.2)300 (40.9)306 (41.6)
 Somewhat and very knowledgeable277 (38.2)281 (38.3)278 (37.8)
Weekly expenditure in groceries
 Less than 1500 MXN471 (65.0)473 (64.4)485 (66.0)0.878
 Between 1500 and 3000 MXN235 (32.4)237 (32.3)226 (30.8)
 More than 3000 MXN19 (2.6)24 (3.3)24 (3.3)
  1. GDA Guideline Daily Amount; MTL Multiple Traffic Light; WL Warning Labels
  2. a Estimated with self-reported height and weight
  3. b Information collected with the question: “How interested are you in your health”
  4. c Data collected with the question: “In your opinion, how knowledgeable are you in nutrition?”